NATURAL STONE SEALERS To protect, to prevent, to preserve are very important words in the stone sector. The ancient Romans protected their own marble artworks by using oils and animal fats in order to water-proof them. Today, Bellinzoni proposes a range of protective products that allow to protect marbles, granites and stones from the stain penetration caused by damp, oil, fat, etc. These products are very effective in the treatments whether at industrial level (in line of production), or for the protection of floors already layed. The products available are: water-oil repellents, color enhancers, consolidating agents. All the products have been tested in laboratory in order to check their effectiveness.